How thick should foam board be?
For residential applications, the typical thickness of rigid insulation ranges from 1” to 3”, depending on the part of the house being insulated. For basement walls, a thicker foam board is often recommended because of its high moisture environment and the need for greater energy retention. While spray foam insulation injected into wall cavities does dry to a rigid state, this is not considered rigid foam insulation. However, you can use rigid foam board instead of spray or fiberglass insulation where it makes sense, such as in wall cavities that may risk becoming wet or moist.Spray foam insulation has an R-value of about 5. Rigid foam board’s R-value is between 3. Spray foam is better for maximum insulation needs. But rigid foam board is still effective for certain uses.
Is PVC foam board strong?
High strength the closed-cell structure of pvc foam board gives it high compressive strength. pvc foam boards have excellent strength-to-weight ratios, with high rigidity despite low density. They can withstand over 10 times more weight than wood panels of the same thickness. Not heat-resistant this implies that in environments with temperatures exceeding this range, pvc foam board can become soft and may even lose structural stability. Using pvc foam board in high-temperature conditions could result in material deformation, failure, or performance degradation.Despite its excellent resistance to moisture and water damage, it is important to note that PVC foam board is not completely waterproof. While it can withstand exposure to water for short periods of time, prolonged exposure can cause the material to degrade and break down.Moisture Resistance: PVC Foam Board remains unaffected by moisture and humidity, ensuring longevity and durability. While plywood struggles with moisture. It can swell, warp, and even rot, requiring additional treatments to maintain its integrity.Water Resistance: PVC foam boards have solid resistance to water due to its composition. When it comes in contact with water, it does not swell or lose its composition. This makes is fit for all types of weather.